package com.edu.base.common.utils;

import java.security.SecureRandom;
import java.util.UUID;

import com.ruoyi.common.utils.UUIDUtils;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;

/**
 * 封装各种生成唯一性ID算法的工具类.
 * @author
 * @version 2013-01-15
 */
@Service
@Lazy(false)
public class IdGen  {

	private static SecureRandom random = new SecureRandom();

	/**
	 * 封装JDK自带的UUID, 通过Random数字生成, 中间无-分割.
	 */
	public static String uuid() {
		return UUIDUtils.getUUID().replaceAll("-", "");
	}

	/**
	 * 使用SecureRandom随机生成Long.
	 */
	public static long randomLong() {
		return Math.abs(random.nextLong());
	}

	/**
	 * 基于Base62编码的SecureRandom随机生成bytes.
	 */
	public static String randomBase62(int length) {
		byte[] randomBytes = new byte[length];
		random.nextBytes(randomBytes);
		return Encodes.encodeBase62(randomBytes);
	}
	/**
	 * 获取游客自动生成用户名
	 * @param args
	 */
	public  static  String  getUserName(String str) {
		return UUIDUtils.getUUID().substring(6).toUpperCase()+"-"+str;
	}

	public static void main(String[] args) {
		System.out.println(IdGen.uuid());
		System.out.println(IdGen.uuid().length());
//		for (int i=0; i<1000; i++){
//			System.out.println(IdGen.randomLong() + "  " + IdGen.randomBase62(5));
//		}
	}

}
